ASTROSAT CZTI

Data Quality Report

Orbit 09275

Creation date: 2024-06-27T15:43:46.430981
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G07_077T01_9000001306_09275cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09275cztM0_level2_quad_clean.evt
Size (bytes)220,147,20029,825,280
Size209.9 MB 28.4 MB
Events in quadrant A2,169,096174,558
Events in quadrant B1,420,575181,408
Events in quadrant C1,330,680180,554
Events in quadrant D1,559,263170,360

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084412
B060001
C057231
D063941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2736752.741228%
B2736220.804094%
C2736200.730994%
D2736541.973684%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 3901 2737 8 8 0.21% 0.29%
B 3901 2737 0 0 0.00% 0.00%
C 3901 2737 0 0 0.00% 0.00%
D 3901 2737 16 16 0.41% 0.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 5 788499 11270.4 343 336 69.9
A 1 162 16082 225.16 343 336 69.9
A 13 251 14024 195.73 343 336 69.9
B 0 230 35583 519.03 349 340 67.9
B 4 173 15880 228.86 349 340 67.9
B 12 111 7038 98.64 349 340 67.9
C 13 61 2546 27.46 340 341 80.3
C 8 222 1998 20.64 340 341 80.3
C 14 67 1489 14.3 340 341 80.3
D 12 233 104984 1226.08 337 328 85.4
D 1 52 88879 1037.4 337 328 85.4
D 2 152 52293 608.79 337 328 85.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter